1) Alkali flat 2) Basin 
Shallow basin in a desert region containing salt and gypsum deposited by an evaporated salt lake; also a flat area of dry or drying salt water that opens or once opened onto tidal water.
[n] - a shallow basin in a desert region
noun a shallow basin in a desert region; contains salt and gypsum that was deposited by an evaporated salt lake
Shallow basin in a desert region containing salt and gypsum deposited by an evaporated salt lake; also a flat area of dry or drying salt water that opens or once opened onto tidal water.